can i suggest take it off the antistatic bag as the outside of the bag is not antistatic put it an empty box instead as you might be shorting the board
You wouldn't be able to test with an Ivy CPU?
Stupid thought, but maybe the BIOS needs to be updated for backwards compatibility?
try a different cpu if you can also you could try to get the bios update to see if it will help. http://www.msi.com/product/mb/Z77A-GD65.html